UPSI Digital Repository (UDRep)
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UPSI Digital Repository (UDRep)
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| Abstract : Universiti Pendidikan Sultan Idris |
| This research aimed to investigate the adsorption of heavy metals and dyes using adsorbent and filter cartridge from kenaf bast fiber (KBF). This research was conducted in several stages starting with adsorption and characterization studies followed by production and evaluation of filter cartridge prototype. Adsorption was studied through removal of heavy metals (Cd, Cu, Ni, Pb and Zn) and dyes (Congo red, Methyl orange, Methylene blue and Rhodamine B.) in single- and multi-systems. The effects of experimental variables (solution pH, initial concentrations and adsorbent dosage) on adsorption of KBF were also assessed. The adsorption equilibrium was analyzed using Langmuir and Freundlich isotherm models. The KBF adsorbent was characterized using Field Emission Scanning Electron Microscope (FESEM), Energy Dispersive X-Ray (EDX) spectrometer and Fourier Transform Infrared Spectrometer (FTIR) before and after adsorption process. The performance of filter cartridge prototype to treat synthetic and real wastewater effluent was evaluated in laboratory. The results showed that Pb(II) and Methylene blue were the most adsorbed contaminants for all experimental conditions in single-system. However, the removal of all heavy metals and dyes was significantly reduced in multi-system due to competition effect for active sites on the adsorbent. The values of equilibrium separation factor (RL) and the Freundlich constants (n) indicated that the uptake of all contaminants by KBF was favorable. FESEM analysis revealed significant changes on adsorbent’s surface following interaction with contaminants. The uptake of heavy metals by KBF was confirmed by EDX analysis. FTIR analysis proved that hydroxyl, carboxyl and amine are the main functional groups involved in heavy metals and dyes uptake. To conclude, the filter cartridge prototype was an excellent adsorbent to remove multi-contaminants in synthetic and real wastewater effluent. The implication of this study is KBF filter cartridge has great potential to replace conventional adsorbents for future environment friendly wastewater treatment. |
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